*{
    margin: 0;
    padding: 0;
}
header{
    height: 100px;
    background-color: black;
}
.topo{
    margin: auto;
    width: 1000px;
    height: 100%;
    background-color: gray;
}
section{
    margin: auto;
    width: 1000px;
    background-color: lightgray;
}
nav{
    width: 300px;
    height: 300px; /* Apagar  */
    background-color: blue;
    float: left;
}
p{
    color: white;
    font-size: 20px;
}
footer{
    background-color: black;
    height: 200px; /* Apagar */
}
.rodape{
    margin: auto;
    width: 1000px;
    height: 100%;
    background-color: gray;
}